diff --git a/geom/segment.cpp b/geom/segment.cpp
index aba65fed..48974ce9 100644
--- a/geom/segment.cpp
+++ b/geom/segment.cpp
@@ -8,6 +8,7 @@
 
 #include "segment.hpp"
 
+#include "aabb.hpp"
 #include "ops.hpp"
 
 #include "../region.hpp"
@@ -66,3 +67,15 @@ cruft::geom::intersects (cruft::geom::segment2i seg, cruft::region2i rect)
 {
     return intersects (seg.cast<float> (), rect.cast<float> ());
 }
+
+
+///////////////////////////////////////////////////////////////////////////////
+template <>
+cruft::geom::aabb3f
+cruft::geom::bounds (cruft::geom::segment3f obj)
+{
+    return {
+        min (obj.a, obj.b),
+        max (obj.a, obj.b),
+    };
+}